/// <summary> /// 添加水印 /// </summary> /// <param name="bitmap">原始图片</param> protected Image WaterMark(Image image, User user) { ///读取水印配置 CommonConfig.ConfigItem watermarkmodel = CommonConfig.Instance.GetConfig("WaterMark"); if (watermarkmodel != null) { if (watermarkmodel.Cate == 1) //判断水印类型 { //水印图片 Image copyImage = Image.FromFile(System.Web.HttpContext.Current.Server.MapPath(watermarkmodel.ImageUrl)); int width = 0; int height = 0; switch (watermarkmodel.Location) { case 1: width = 0; height = 0; break; //左上 case 2: width = (image.Width - copyImage.Width) / 2; height = 0; break; //左中 case 3: width = image.Width - copyImage.Width; height = 0; break; //右上 case 4: width = 0; height = (image.Height - copyImage.Height) / 2; break; //左中 case 5: width = (image.Width - copyImage.Width) / 2; height = (image.Height - copyImage.Height) / 2; break; //中中 case 6: width = image.Width - copyImage.Width; height = (image.Height - copyImage.Height) / 2; break; //右中 //case 7: width = 0; height = image.Height - copyImage.Height; break;//左下 case 7: width = 10; height = image.Height - Tools.SafeInt(copyImage.Height * 2); break; //左下 case 8: width = (image.Width - copyImage.Width) / 2; height = image.Height - copyImage.Height; break; //中下 case 9: width = image.Width - copyImage.Width; height = image.Height - copyImage.Height; break; //右下 } Graphics g = Graphics.FromImage(image); g.DrawImage(copyImage, new Rectangle(width, height, Convert.ToInt16(watermarkmodel.Width), Convert.ToInt16(watermarkmodel.Height)), 0, 0, copyImage.Width, copyImage.Height, GraphicsUnit.Pixel); using (Font f = new Font("Verdana", 10)) { using (Brush b = new SolidBrush(Color.White)) { g.DrawString((string.IsNullOrWhiteSpace(user.DrawText) ? BaseHelper.FilterEmoji(user.NickName) : user.DrawText), f, b, Tools.SafeInt(watermarkmodel.Width) + 15, image.Height - Tools.SafeInt(copyImage.Height * 2)); g.DrawString("http://www.xiaoweipian.com/u/" + user.Number, f, b, 10, image.Height - copyImage.Height); } } g.Dispose(); copyImage.Dispose(); } else { //文字水印 int width = 0; int height = 0; int fontwidth = Convert.ToInt32(watermarkmodel.FontSize * watermarkmodel.Word.Length); int fontheight = Convert.ToInt32(watermarkmodel.FontSize); switch (watermarkmodel.Location) { case 1: width = 0; height = 0; break; case 2: width = (image.Width - fontwidth) / 2; height = 0; break; case 3: width = image.Width - fontwidth; height = 0; break; case 4: width = 0; height = (image.Height - fontheight) / 2; break; case 5: width = (image.Width - fontwidth) / 2; height = (image.Height - fontheight) / 2; break; case 6: width = image.Width - fontwidth; height = (image.Height - fontheight) / 2; break; case 7: width = 0; height = image.Height - fontheight; break; case 8: width = (image.Width - fontwidth) / 2; height = image.Height - fontheight; break; case 9: width = image.Width - fontwidth; height = image.Height - fontheight; break; } Graphics g = Graphics.FromImage(image); g.DrawImage(image, 0, 0, image.Width, image.Height); Font f = new Font("Verdana", float.Parse(watermarkmodel.FontSize.ToString())); Brush b = new SolidBrush(Color.White); g.DrawString(watermarkmodel.Word, f, b, width, height); g.Dispose(); } } return(image); }
/// <summary> /// 添加水印 /// </summary> /// <param name="bitmap">原始图片</param> protected Image WaterMark(Image image) { ///读取水印配置 CommonConfig.ConfigItem watermarkmodel = CommonConfig.Instance.GetConfig("WaterMark"); if (watermarkmodel != null) { if (watermarkmodel.Cate == 1) //判断水印类型 { //水印图片 Image copyImage = Image.FromFile(System.Web.HttpContext.Current.Server.MapPath(watermarkmodel.ImageUrl)); int width = 0; int height = 0; switch (watermarkmodel.Location) { case 1: width = 0; height = 0; break; //左上角 case 2: width = (image.Width - copyImage.Width) / 2; height = 0; break; //左上居中 case 3: width = image.Width - copyImage.Width; height = 0; break; //右上 case 4: width = 0; height = (image.Height - copyImage.Height) / 2; break; //左中 case 5: width = (image.Width - copyImage.Width) / 2; height = (image.Height - copyImage.Height) / 2; break; //中间 case 6: width = image.Width - copyImage.Width; height = (image.Height - copyImage.Height) / 2; break; case 7: width = 0; height = image.Height - copyImage.Height; break; case 8: width = (image.Width - copyImage.Width) / 2; height = image.Height - copyImage.Height; break; case 9: width = image.Width - copyImage.Width; height = image.Height - copyImage.Height; break; //右下角 } Graphics g = Graphics.FromImage(image); g.Clear(Color.Transparent);//清空画布并以透明背景色填充 g.DrawImage(copyImage, new Rectangle(width, height, Convert.ToInt16(watermarkmodel.Width), Convert.ToInt16(watermarkmodel.Height)), 0, 0, copyImage.Width, copyImage.Height, GraphicsUnit.Pixel); g.Dispose(); copyImage.Dispose(); } else { //文字水印 int width = 0; int height = 0; int fontwidth = Convert.ToInt32(watermarkmodel.FontSize * watermarkmodel.Word.Length); int fontheight = Convert.ToInt32(watermarkmodel.FontSize); switch (watermarkmodel.Location) { case 1: width = 0; height = 0; break; case 2: width = (image.Width - fontwidth) / 2; height = 0; break; case 3: width = image.Width - fontwidth; height = 0; break; case 4: width = 0; height = (image.Height - fontheight) / 2; break; case 5: width = (image.Width - fontwidth) / 2; height = (image.Height - fontheight) / 2; break; case 6: width = image.Width - fontwidth; height = (image.Height - fontheight) / 2; break; case 7: width = 0; height = image.Height - fontheight; break; case 8: width = (image.Width - fontwidth) / 2; height = image.Height - fontheight; break; case 9: width = image.Width - fontwidth; height = image.Height - fontheight; break; } Graphics g = Graphics.FromImage(image); g.DrawImage(image, 0, 0, image.Width, image.Height); Font f = new Font("Verdana", float.Parse(watermarkmodel.FontSize.ToString())); Brush b = new SolidBrush(Color.White); g.DrawString(watermarkmodel.Word, f, b, width, height); g.Dispose(); } } return(image); }